Western Australian Consolidated Regulations Western Australian Consolidated Regulations In this
Subdivision —
filter means a filter that complies with the
requirements of AS/NZS 1715;
oxygen deficient atmosphere means an atmosphere
containing less than 19.5% oxygen;
self-contained breathing apparatus means a type of
supplied air respirator which is carried by the user and supplies the user
with respirable air from a source carried by the user;
supplied air respirator means a device which, by
means of an air line, air hose or apparatus carried by the user, supplies the
user with respirable air from a source other than the ambient atmosphere;
toxic atmosphere , in relation to a workplace,
includes —
(a) an
atmosphere in which there is an atmospheric contaminant in a concentration
exceeding the exposure standard for the contaminant specified in the National
Exposure Standards [NOHSC: 1003 (1995)];
(b)
where an inspirable dust or respirable dust is not within the scope of the
Exposure Standards referred to in paragraph (a), an atmosphere in which a
person at the workplace would be exposed to —
(i)
the inspirable dust that, when measured in accordance
with AS 3640, exceeds 10 milligrams per cubic metre of air; or
(ii)
the respirable dust that, when measured in accordance
with AS 2985, exceeds 5 milligrams per cubic metre of air,
as an average over a
work period of 8 hours; and
(c) an
atmosphere containing gas, vapour, dust or any other particle which is, or is
in a concentration that is, a risk to the safety and health of a person at the
workplace.
[Regulation 3.37 amended in Gazette
22 Jul 1997 p. 3840.]